The agency started the 5-Star safety ratings program in 1993 and Tesla's Model X and Model S, which has been the subject of at least one NHTSA investigation, have both received the top rating in the past.

The ratings provide information about crash protection and rollover safety of new vehicles.

Tesla's ability to deliver on production targets for Model 3 sedans has weighed on its stock in the past, and the company recently acknowledged there were delivery bottlenecks and promised to swiftly iron out the delays.